Thanks for your review & feedback.
As we described in our Welcome Guide, during snowy weekends (like the weekend you stayed), we strongly recommend using a 4WD or AWD car for Tahoe.
Please note that you stayed with us on 3/23/2018 to 3/25/2018. During that weekend, Tahoe Donner received about 4 feet of fresh snow. During the day on 3/24/2018 (Saturday), it had snowed heavily all day, and by early evening, there was probably 2 feet of freshly fallen snow.
We subscribe to Tahoe Donner's only driveway snow plow service: Elements Mountain Company (used to be Waltman and SnowTech - but they merged into 1 company - which is the only major company that services Tahoe Donner). However, this company not only services the "entire" Tahoe Donner area, it also typically works from 1 AM to 9 AM. Whenever is there over 3-inches of snow in any of their customer's driveways, they are out plowing driveways.
We pay for this service every season and they have done a fine job for us - with little to no owner or guest issues.
During certain very stormy weekends (like the weekend you stayed at the cabin) when there's lots of cold snow, Elements Mountain Company is simply logistically overwhelmed and is unable to plow "every single house multiple times a day "- because the snow was just falling too much, too fast.
I believe with a 4WD or AWD car or a car with snow chains, you should be able to access the house without issues.
I think even with a flat driveway, given the significant amount of snowfall, and a company that is working overtime to get to all the houses in Tahoe Donner, it would be equally challenging to access the driveway just because it was just too much snow.
To ensure you can get around safely, my recommendation is to visit Tahoe when there is no major weather events, such as during late November or early December, or mid to late April, or May (if the ski resorts are open), or during weekends when there is warm temperatures and little to no major precipitation or weather. It would be much easier to access and still enjoy your trip.
Hope this helps,